in a tank line just brought online yesterday, how does someone already have a tier 9 WZ120?

You have a pile of "locked" experience, you spend $ to convert the locked experience to free experience, and then spend the free research on researching the tree all the way to tier 9.

For myself, I've got ~800K in "locked" experience on my account, so divide that by 25 exp / gold, and it would cost 32,000 gold to convert it all to free experience, or around $150. That's not much if you're an average teen with nothing to spend your $ on.

Note four rows: Victories, K/D, Capture Points, and Efficiency. Note that on account of bad luck in the last few days, my Victory % has been poor. Despite (or perhaps, on account of) that, my K/D ratio has improved, and I have made it to cap more often. Note the direct correlation between K/D, Cap Points, and Efficiency. Also note the inverse correlation between Victories and Efficiency.

So back to the question. The most important task: cap. To do that: survive. And in the process, kill stuff. In that order.

Note four rows: Victories, K/D, Capture Points, and Efficiency. Note that on account of bad luck in the last few days, my Victory % has been poor. Despite (or perhaps, on account of) that, my K/D ratio has improved, and I have made it to cap more often. Note the direct correlation between K/D, Cap Points, and Efficiency. Also note the inverse correlation between Victories and Efficiency.

So back to the question. The most important task: cap. To do that: survive. And in the process, kill stuff. In that order.

In the past 24 hours it has been 1904.
In the past week it has been 1767
In the past 30 days it has been 1496.
In the past 2 months it has been 1494.

yet.. My efficiency overall is 1339.

Sooooo... this would lead one to conclude that it takes a while to recover from one's initial learning period. Even though my last two months have all been above 1494 - whatever my original learning curve derp'd me for is dragging me down to 1339.

I installed the game on October 13th.... therefore I'm still recovering from my first month of idiocracy

Sam: there is your answer too.. you've been 1142 in the past 24 hours, over 1000 efficiency the past week and just about 1000 for the past 2 months - you are still recovering from your learning curve too.

Since you have fewer games (450'ish less than me), you'll only climb every round from here!

Note four rows: Victories, K/D, Capture Points, and Efficiency. Note that on account of bad luck in the last few days, my Victory % has been poor. Despite (or perhaps, on account of) that, my K/D ratio has improved, and I have made it to cap more often. Note the direct correlation between K/D, Cap Points, and Efficiency. Also note the inverse correlation between Victories and Efficiency.